I'm tired of waxing my lip & chin and wanted to do laser hair removal. I went on a couple of consults to different places but some told me they would use a yag on me while others said i needed alex. The appointments i went to were during the same month and i'm not a beach/sun person so it wasn't like i had a tan one time and didn't on the previous appointments. I thought yag & alex had to do with skin color and/or hereditary (I am 1/2 Italian & 1/2 Polish if that helps). Is one of them (yag or alex) stronger than the other and what would happen if the wrong one is used? Now i'm reconsidering the laser idea altogether :-(